 When I've gotten here to NASA, it's typical for a project to take 5, 10, 15, 20, 25 years. Partly because the short, quick ones have been done. When NASA was young in the early 60s, it was possible to launch a new satellite in six months because nothing even this big had ever been launched to measure that particular thing before. Now, all that stuff has been done and we have to plan bigger things, most of the, and they take longer. So a typical very major observatory like the James Webb Telescope is from roughly 1995. We started talking about it to 2018. We'll launch it and hope to run it for 10, 11 more years after the launch. So it's a good part of a century. It takes to start and finish a project like that. On the other hand, in other areas of science, sometimes you can have an idea and make your discovery and publish it in a few weeks if you're in a fresh new area. So sometimes biophysics is like that because the new tools are just becoming available. And so if you have your new tool, you know that nobody's ever used that before and anything you find is new. So there's this huge range of time scales. Sometimes if you're a theorist and your idea is just to think about how things work and you have a new idea, maybe you can publish it very quickly also. It's these things about building giant new tools that we do at NASA that takes a long, long time. But a lot of scientific projects are a lot quicker than that.